fix: Exclude launchdarkly/gh-actions from Renovate management

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: jsonbailey

.github/renovate.json

@@ -1,5 +1,12 @@
 {
   "extends": ["config:recommended", "helpers:pinGitHubActionDigests"],
+  "packageRules": [
+    {
+      "enabled": false,
+      "matchDepTypes": ["action"],
+      "matchPackagePatterns": ["^launchdarkly/gh-actions/\\.github/workflows/"]
+    }
+  ],
   "vulnerabilityAlerts": {
     "enabled": true
   },